Expressway construction

Expressway construction flow

1. 01

   Business plan explanation

   • We will explain the route outline and future plans to the municipality where the Expressway passes.
   • At the same time, we will explain the route outline and future plans to people in the areas along the line.
   
2. 02

   Surveying / Soil investigation / Design

   • We will get the consent of all landowners, conduct route surveys and soil surveys, and collect the data necessary for the design.
   • We will design the road based on the results of the route survey and soil survey, and create a drawing for design consultation.
   
3. 03

   Design consultation

   • We will discuss with the facility manager and local residents about the switching of surrounding roads and waterways based on the drawing and decide on the road structure.
   • We will design based on the results of design consultation and decide the width of the site to be acquired.
   
4. 04

   Land width pile installation / land surveying

   • In order to obtain the consent of all landowners and to clarify the range of land necessary for the project, we will stake the site according to the blueprint (this is called the site width stake).
   • We will ask the landowners to confirm the site boundaries on site and measure the site.
   • If there are buildings or trees in the site to be acquired, we will also survey and investigate them.
   
5. 05

   Land acquisition

   • Based on the compensation standards used by all public enterprises, we will calculate compensation for land prices and relocation fees for buildings based on an appropriate and fair idea.
   • After that, we will make a contract after explaining the compensation contents to the owners and understanding them.
   
6. 06

   Buried cultural property survey

   • If there is a buried cultural property on the acquired land, we will conduct an excavation survey.
   
7. 07

   Construction

   • We will order earthwork, tunnel construction, bridge construction, pavement construction, and facility construction one by one according to the business progress.
   • We aim to complete the work by performing quality control and process control of the work.
   
8. 08

   Opening

   

Ring road maintenance in the metropolitan area

We are efficiently advancing the development of networks such as ring roads in the Tokyo metropolitan area.

Metropolitan ring road

Ring road maintenance effect

About 60% of the traffic passes through the inner-city ring road. (2001)

The following effects are expected due to the development of the ring road.